1225201244425 has 6 divisors (see below), whose sum is σ = 1519249543118. Its totient is φ = 980160995520.

The previous prime is 1225201244341. The next prime is 1225201244447. The reversal of 1225201244425 is 5244421025221.

It can be written as a sum of positive squares in 3 ways, for example, as 45787868361 + 1179413376064 = 213981^2 + 1086008^2 .

It is not a de Polignac number, because 1225201244425 - 2²¹ = 1225199147273 is a prime.

It is a super-2 number, since 2×1225201244425² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24504024864 + ... + 24504024913.

Almost surely, 2^{1225201244425} is an apocalyptic number.

It is an amenable number.

1225201244425 is a deficient number, since it is larger than the sum of its proper divisors (294048298693).

1225201244425 is an equidigital number, since it uses as much as digits as its factorization.

1225201244425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49008049787 (or 49008049782 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 1225201244425 its reverse (5244421025221), we get a palindrome (6469622269646).

The spelling of 1225201244425 in words is "one trillion, two hundred twenty-five billion, two hundred one million, two hundred forty-four thousand, four hundred twenty-five".